一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Heterocyclic compound

Heterocyclic compounds are a class of organic compounds with cyclic structure. The ring-constituting atoms in the molecule, in addition to carbon, also include one or more nitrogen, sulfur, oxygen and other atoms. Those containing one ring are called single-heterocyclic compounds, such as furan, thiazole, and pyridine. Those containing two or more rings are called fused heterocyclic compounds such as quinoline and purine. The most common and most stable are five- or six-membered heterocyclic ring. Simple heterocyclic ring is capable of merging with benzene or another heterocyclic ring to form a bicyclic, tricyclic or more complex ring system. Some kinds of heterocyclic rings have features of aromatic compounds, such as being easy to participate into substitution reaction, difficult to have addition reaction and being stable to oxidant. Heterocyclic compounds are widely found in nature, such as nucleic acids, most kinds of vitamins, chlorophyll, heme, most kinds of alkaloids, pigments and so on. A fraction of the heterocyclic compounds have aromatic characteristics, such as plants coumarone, jasmonate and animals civetone. There are many synthetic pesticides that belong to such compounds such as herbicides atrazine, amitrole, CMPT, insecticide fluorine propargite, quinoline parathion, thioquinox and so on. Simple heterocyclic compound is an important raw material of organic chemical industry.

The cyclic compounds with atoms constituting the ring system, in addition to carbon atom, also containing O, S, and N heteroatom are collectively referred to as heterocyclic compounds. According to this definition, the cyclic dicarboxylic anhydride, the cyclic imide, lactones, lactides, cyclic anhydrides, lactams, and cyclic ethers, strictly speaking, also belong to heterocyclic compounds. However, due to the nature of these compounds are similar with aliphatic compound, and can easily undergo either the cyclization of the open-chain compounds or ring open reaction to be transformed into chain compounds, thus being generally attributed to the aliphatic chemistry for discussion. Therefore, heterocyclic compounds generally refer specifically to those heterocyclic compounds with relatively stable ring system but different levels of aromatic properties, namely aromatic heterocyclic compound.

The organic heterocyclic compounds belong to a large class in the three large categories of organic compounds, open chain, carbocyclic and heterocyclic organic compounds. It contains various kinds and has a large number accounting for about one-third of all known organic compounds and is also widespread in the biosphere, having close relation with the biological growth, development, reproduction, and genetic variation and so on. Common heterocyclic compounds include furan, thiophene, pyrrole, pyridine, quinoline, carbazole and so on.

These kinds of heterocyclic compounds are widely used in organic synthesis or as pharmaceuticals, pesticides, solvents and so on. They are colorless liquids with special smell or crystallization and have specific gravity being less than or close to water. They are toxic and can be soluble in some organic solvents and slightly soluble in water. In case of fire, heat, oxidants and strong acids, it can cause fire or explosion with simultaneous deposition of toxic sulfur dioxide or nitrogen oxide gas. Furan, when being exposed to the air, is capable of forming peroxides with causing an explosion during distillation. In the management of dangerous goods, according to the risk grades of fire, explosion, toxicity risk, they were classified as flammable liquids, flammable solids and organic toxic chemicals; when used in the reservoir, the first two comply danger of the A and B class while the latter one is based on class C fire danger for conducting fire management. In case of fire, we can use foam, dry powder, water mist, 1211 and carbon dioxide for fire extinguishing agents.

Click on the specific product, view the latest prices of the products, information, serving information
Structure Chemical Name CAS MF
5,7-Dihydro-indolo[2,3-b]carbazole 5,7-Dihydro-indolo[2,3-b]carbazole 111296-90-3 C18H12N2
N-BOC-1H-INDOLE-5-CARBALDEHYDE N-BOC-1H-INDOLE-5-CARBALDEHYDE 279256-09-6 C14H15NO3
4-BROMO-7-CHLORO-1H-INDOLE 4-BROMO-7-CHLORO-1H-INDOLE 126811-30-1 C8H5BrClN
METHYL 1H-PYRROLO[2,3-C]PYRIDINE-5-CARBOXYLATE METHYL 1H-PYRROLO[2,3-C]PYRIDINE-5-CARBOXYLATE 147071-00-9 C9H8N2O2
5-FLUOROINDOLE-3-CARBOXYLIC ACID 5-FLUOROINDOLE-3-CARBOXYLIC ACID 23077-43-2 C9H6FNO2
2-CHLOROINDOLE 2-CHLOROINDOLE 16863-96-0 C8H6ClN
4-CHLOROINDOLE-3-CARBOXYLIC ACID 4-CHLOROINDOLE-3-CARBOXYLIC ACID 23872-36-8 C9H6ClNO2
5-Bromo-7-iodo-1H-indole 5-Bromo-7-iodo-1H-indole 123020-20-2 C8H5BrIN
6-Fluoroindole-2-carboxylic acid 6-Fluoroindole-2-carboxylic acid 3093-97-8 C9H6FNO2
5-Trifluoromethyl-1H-pyrrolo[2,3-b]pyridine 5-Trifluoromethyl-1H-pyrrolo[2,3-b]pyridine 1036027-54-9 C8H5F3N2
6-methoxy-1H-pyrrolo[2,3-b]pyridine 6-methoxy-1H-pyrrolo[2,3-b]pyridine 896722-53-5 C8H8N2O
INDOLENE 50 INDOLENE 50 67801-36-9 C26H32N2O
6-(4-FLUOROPHENYL)INDOLE 6-(4-FLUOROPHENYL)INDOLE 782-17-2 C14H10FN
Ethyl 6-bromo-5-hydroxy-1-methyl-2-phenylthiomethyl-1H-indole-3-carboxylate Ethyl 6-bromo-5-hydroxy-1-methyl-2-phenylthiomethyl-1H-indole-3-carboxylate C19H18BrNO3S
1H-Indole-2-carboxylic acid, 4-Methoxy-, ethyl ester 1H-Indole-2-carboxylic acid, 4-Methoxy-, ethyl ester 43142-25-2 C12H13NO3
1,5,6,7-TETRAHYDRO-4H-INDOL-4-ONE 1,5,6,7-TETRAHYDRO-4H-INDOL-4-ONE 13754-86-4 C8H9NO
5-Methoxy-2,3-dihydroindoline 5-Methoxy-2,3-dihydroindoline 21857-45-4 C9H11NO
1H-Indole, 6-broMo-4-iodo- 1H-Indole, 6-broMo-4-iodo- 885519-17-5 C8H5BrIN
1-(5-Carboxypentyl)-2,3,3-trimethyl-3H-indol-1-ium-5-sulfonate 1-(5-Carboxypentyl)-2,3,3-trimethyl-3H-indol-1-ium-5-sulfonate 146368-08-3 C17H23NO5S
7-Bromo-6-fluoro-1H-indole 7-Bromo-6-fluoro-1H-indole 1000339-62-7 C8H5BrFN
4-broMo-1H-pyrrolo[2,3-c]pyridin-2(3H)-one 4-broMo-1H-pyrrolo[2,3-c]pyridin-2(3H)-one 1190318-93-4 C7H5BrN2O
5-Fluoro-6-Methoxy-1H-indole 5-Fluoro-6-Methoxy-1H-indole 1211595-72-0 C9H8FNO
3,3-difluoro-1,3-dihydro-2H-Indol-2-one 3,3-difluoro-1,3-dihydro-2H-Indol-2-one 197067-27-9 C8H5F2NO
4-(trifluoroMethyl)-1H-pyrrolo[2,3-b]pyridine 4-(trifluoroMethyl)-1H-pyrrolo[2,3-b]pyridine 1092579-96-8 C8H5F3N2
5-Nitroindole-2-carboxylic acid 5-Nitroindole-2-carboxylic acid 16730-20-4 C9H6N2O4
6-BroMo-5-hydroxyindole 6-BroMo-5-hydroxyindole 211808-66-1 C8H6BrNO
3-broMo-1H-indole-6-carbonitrile 3-broMo-1H-indole-6-carbonitrile 1326714-80-0 C9H5BrN2
(1R)-5-Bromo-1-methyl-2-trityl-2,3-dihydro-1H-isoindole (1R)-5-Bromo-1-methyl-2-trityl-2,3-dihydro-1H-isoindole 194805-14-6 C28H24BrN
4-(TRIFLUOROMETHYL)ISOINDOLINE HCL 4-(TRIFLUOROMETHYL)ISOINDOLINE HCL 1203686-59-2 C9H9ClF3N
Indole-3-carbinol Indole-3-carbinol 700-06-1 C9H9NO
ethyl 6-cyano-1H-indole-2-carboxylate ethyl 6-cyano-1H-indole-2-carboxylate 104291-81-8 C12H10N2O2
(5-chloro-1H-indol-2-yl)methanol (5-chloro-1H-indol-2-yl)methanol 53590-47-9 C9H8ClNO
(E)-6,6'-dibromo-[3,3'-biindolinylidene]-2,2'-dione (E)-6,6'-dibromo-[3,3'-biindolinylidene]-2,2'-dione 1147124-21-7 C16H8Br2N2O2
6-Bromoindole-3-carboxylic acid 6-Bromoindole-3-carboxylic acid 101774-27-0 C9H6BrNO2
1H-Indole, 1,6-dimethyl- 1H-Indole, 1,6-dimethyl- 5621-15-8 C10H11N
4,5,6,7-Tetrachloro-2-hydroxy-isoindole-1,3-dione 4,5,6,7-Tetrachloro-2-hydroxy-isoindole-1,3-dione 85342-65-0 C8HCl4NO3
6-Chloroindole 6-Chloroindole 17422-33-2 C8H6ClN
6-Methoxy-2,3-dihydro-1H-indole 6-Methoxy-2,3-dihydro-1H-indole 7556-47-0 C9H11NO
ICG NHSester ICG NHSester
6-Chloro-5-fluoroindole 6-Chloro-5-fluoroindole 122509-72-2 C8H5ClFN
METHYL3-FORMYL-1-METHYL-1H-INDOLE-6-CARBOXYLATE METHYL3-FORMYL-1-METHYL-1H-INDOLE-6-CARBOXYLATE 1160219-36-2 C12H11NO3
4,6-DIMETHOXYINDOLE 4,6-DIMETHOXYINDOLE 23659-87-2 C10H11NO2
(1Z,3Z)-1,3-Bis[[(4S)-4,5-dihydro-4-(tert-butyl)-2-oxazolyl]methylene]-2,3-dihydro-1H-isoindole (1Z,3Z)-1,3-Bis[[(4S)-4,5-dihydro-4-(tert-butyl)-2-oxazolyl]methylene]-2,3-dihydro-1H-isoindole 1361563-41-8 C24H31N3O2
Ethyl indole-2-carboxylate Ethyl indole-2-carboxylate 3770-50-1 C11H11NO2
4,6,7-Trimethoxyindole 4,6,7-Trimethoxyindole 161156-02-1 C11H13NO3
5,6-dihydro-indolo[2,3-b]indole 5,6-dihydro-indolo[2,3-b]indole 2007953-59-3 C14H10N2
1-Acetyl-3-indolinone 1-Acetyl-3-indolinone 16800-68-3 C10H9NO2
6-CHLOROISOINDOLIN-1-ONE 6-CHLOROISOINDOLIN-1-ONE 58083-59-3 C8H6ClNO
METHYL (5-BROMO-1H-INDOL-3-YL)(OXO)ACETATE METHYL (5-BROMO-1H-INDOL-3-YL)(OXO)ACETATE 163160-56-3 C11H8BrNO3
2,3,3-TRIMETHYL-1-(4-SULFOBUTYL)-INDOLIUM, INNER SALT 2,3,3-TRIMETHYL-1-(4-SULFOBUTYL)-INDOLIUM, INNER SALT 54136-26-4
6-FLUORO-2-METHYLINDOLE 6-FLUORO-2-METHYLINDOLE 40311-13-5 C9H8FN
1,3-Isoindolinediimine 1,3-Isoindolinediimine 3468-11-9 C8H7N3
INDORAMIN HYDROCHLORIDE INDORAMIN HYDROCHLORIDE 38821-52-2 C22H26ClN3O
Recombinant Indoleamine-2,3-Dioxygenase 2 (IDO2) Recombinant Indoleamine-2,3-Dioxygenase 2 (IDO2)
Isoindoline HCL salt
Isoindoline HCL salt 10479-62-6 C8H9N.ClH
indobufen tablets ibustrin indobufen tablets ibustrin
5-Benzyloxy-6-methoxyindole 5-Benzyloxy-6-methoxyindole 4790-04-9 C16H15NO2
5,6-DIMETHOXYISOINDOLINE 5,6-DIMETHOXYISOINDOLINE 114041-16-6 C10H13NO2
3-BROMO-7-CHLOROINDOLE 3-BROMO-7-CHLOROINDOLE 78225-46-4 C8H5BrClN
4,6-DIBROMOINDOLE 4,6-DIBROMOINDOLE 99910-50-6 C8H5Br2N
5-IODO-1H-PYRROLO[2,3-B]PYRIDINE 5-IODO-1H-PYRROLO[2,3-B]PYRIDINE 898746-50-4 C7H5IN2
Indole-2-carboxylic acid Indole-2-carboxylic acid 1477-50-5 C9H7NO2
5-BROMO-1H-INDAZOLE-3-CARBALDEHYDE 5-BROMO-1H-INDAZOLE-3-CARBALDEHYDE 201227-38-5 C8H5BrN2O
5-Bromo-1-methyl-1H-indole 5-Bromo-1-methyl-1H-indole 10075-52-2 C9H8BrN
6-BROMO-7-METHYLINDOLE 6-BROMO-7-METHYLINDOLE 1000343-89-4 C9H8BrN
2-(2,6-dioxopiperidin-3-yl)-5,6-difluoroisoindoline-1,3-dione 2-(2,6-dioxopiperidin-3-yl)-5,6-difluoroisoindoline-1,3-dione 1496997-41-1 C13H8F2N2O4
3-IODO-PYRROLO[2,3-B]PYRIDINE-1-CARBOXYLIC ACID TERT-BUTYL ESTER 3-IODO-PYRROLO[2,3-B]PYRIDINE-1-CARBOXYLIC ACID TERT-BUTYL ESTER 192189-18-7 C12H13IN2O2
3-IODO-1-(PHENYLSULFONYL)-1H-INDOLE 3-IODO-1-(PHENYLSULFONYL)-1H-INDOLE 80360-14-1 C14H10INO2S
6-BROMO-2,3-DIHYDRO-1H-INDOLE HYDROCHLORIDE 6-BROMO-2,3-DIHYDRO-1H-INDOLE HYDROCHLORIDE 63839-24-7 C8H8BrN
2H-INDOL-2-ONE, 6-AMINO-1,3-DIHYDRO- 2H-INDOL-2-ONE, 6-AMINO-1,3-DIHYDRO- 150544-04-0 C8H8N2O
2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-[2,5-bis[2-[1-(1-methylbutyl)benz[cd]indol-2(1H)-ylidene]ethylidene]cyclopentylidene]-1-butyl-3-(2-methoxy-1-methylethyl)- 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-[2,5-bis[2-[1-(1-methylbutyl)benz[cd]indol-2(1H)-ylidene]ethylidene]cyclopentylidene]-1-butyl-3-(2-methoxy-1-methylethyl)- 223717-84-8 C53H60N4O4
3-Acetyl-1-(4-chlorobenzyl)-2-chloro-indole 3-Acetyl-1-(4-chlorobenzyl)-2-chloro-indole
5-Hydroxy-3-carboxylic acid ethyl ester indole 5-Hydroxy-3-carboxylic acid ethyl ester indole
5-(1-Methylethoxy)-1H-indole 5-(1-Methylethoxy)-1H-indole
3,5-Dibromoindole 3,5-Dibromoindole 81387-89-5 C8H5Br2N
INDOMETHACIN SODIUM SALT TRIHYDRATE INDOMETHACIN SODIUM SALT TRIHYDRATE 74252-25-8 C34H40ClNO4
(1Z,3Z)-1,3-Bis(((R)-4-(tert-butyl)-4,5-dihydrooxazol-2-yl)methylene)isoindoline (1Z,3Z)-1,3-Bis(((R)-4-(tert-butyl)-4,5-dihydrooxazol-2-yl)methylene)isoindoline
Gold Nanoparticles Au-PEG2000-ICG Gold Nanoparticles Au-PEG2000-ICG
ICG-PEG12/Sulfo-EG4/Sulfo-EG8/Sulfo-Osu ICG-PEG12/Sulfo-EG4/Sulfo-EG8/Sulfo-Osu
ICG-MnO2 ICG-MnO2
2,3,3-Trimethyl-3H-indole-5-sulfonic acid 2,3,3-Trimethyl-3H-indole-5-sulfonic acid 132557-72-3 C11H13NO3S
4-BROMO-7-FLUOROINDOLE 4-BROMO-7-FLUOROINDOLE 883500-66-1 C8H5BrFN
5-Bromo-1-methylisatin 5-Bromo-1-methylisatin 2058-72-2 C9H6BrNO2
5-CHLORO-1H-INDOLE-2-CARBOXYLIC ACID METHYL ESTER 5-CHLORO-1H-INDOLE-2-CARBOXYLIC ACID METHYL ESTER 87802-11-7 C10H8ClNO2
5-BROMO-7-NITROINDOLE 5-BROMO-7-NITROINDOLE 165669-16-9 C8H5BrN2O2
5-Hydroxy-6-methyl-7-azaindole 5-Hydroxy-6-methyl-7-azaindole
3-Amino-5-bromo-6-methyl-7-azaindole 3-Amino-5-bromo-6-methyl-7-azaindole
2,3,3-Trimethyl-3H-benzo[f]indole 2,3,3-Trimethyl-3H-benzo[f]indole
6-Iodo-1,2,3-trimethyl-1H-indole 6-Iodo-1,2,3-trimethyl-1H-indole 2883499-70-3 C11H12IN
7-Bromo-1-methyl-5-nitro-1H-indole 7-Bromo-1-methyl-5-nitro-1H-indole 1609130-92-8 C9H7BrN2O2
5-BROMO-6-CHLORO-3-INDOLYL PHOSPHATE P-TOLUIDINE SALT 5-BROMO-6-CHLORO-3-INDOLYL PHOSPHATE P-TOLUIDINE SALT 6769-80-8 C15H15BrClN2O4P
5-Fluoro-6-(methylthio)-1H-indole 5-Fluoro-6-(methylthio)-1H-indole 259860-09-8 C9H8FNS
5,6-Dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole 5,6-Dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole 3024602-26-1 C16H22BNO2
Ethyl 1H-indole-4-carboxylate Ethyl 1H-indole-4-carboxylate 50614-84-1 C11H11NO2
3-cyano-1H-Indole-6-carboxylic acid methyl ester 3-cyano-1H-Indole-6-carboxylic acid methyl ester 1000576-51-1 C11H8N2O2
2-(4-BROMO-PHENYL)-1H-INDOLE 2-(4-BROMO-PHENYL)-1H-INDOLE 6127-49-7 C14H10BrN
4-CHLORO-7-BROMOINDOLE 4-CHLORO-7-BROMOINDOLE 126811-29-8 C8H5BrClN
7-Bromo-1,1,2-trimethyl-1H-benzo[e]indole 7-Bromo-1,1,2-trimethyl-1H-benzo[e]indole 879713-65-2 C15H14BrN
3-bromo-1H-pyrrolo[3,2-b]pyridine 3-bromo-1H-pyrrolo[3,2-b]pyridine 23688-47-3 C7H5BrN2
4-BROMO-1-(TERT-BUTOXYCARBONYL)-1H-INDOLE-3-CARBOXYLIC ACID 4-BROMO-1-(TERT-BUTOXYCARBONYL)-1H-INDOLE-3-CARBOXYLIC ACID 110811-31-9 C9H6BrNO2
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.
绥化市| 宁强县| 东光县| 纳雍县| 霍山县| 鄄城县| 大足县| 永泰县| 安国市| 安徽省| 北票市| 来宾市| 九台市| 襄垣县| 于都县| 华宁县| 宁波市| 邢台市| 西畴县| 永福县| 镇宁| 万盛区| 客服| 思茅市| 宁远县| 大兴区| 花莲市| 垣曲县| 金溪县| 莲花县| 寿阳县| 抚顺县| 盐津县| 邹城市| 陆丰市| 佛坪县| 孝感市| 通江县| 昌宁县| 南汇区| 德钦县|